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    HOLOGRAPHY DEVICE
    1.
    发明公开
    HOLOGRAPHY DEVICE 审中-实审

    公开(公告)号：EP4398042A1

    公开(公告)日：2024-07-10

    申请号：EP23204045.1

    申请日：2023-10-17

    申请人： Envisics Ltd.

    发明人： COLE, Alexander ,  BOARDMAN, Edward ,  MAHARJAN, Rakesh ,  SMEETON, Timothy

    IPC分类号： G03H1/22

    CPC分类号： G03H1/2294 ,  G03H1/2205 ,  G03H2001/220720130101 ,  G03H2223/1220130101 ,  G03H2223/1620130101 ,  G03H2223/1720130101 ,  G03H2223/1820130101 ,  G03H2223/2420130101

    摘要： A device for processing a holographic wavefront, the device comprising a holographic wavefront splitter having an input side arranged to receive a holographic wavefront on a first plane and to divide the holographic wavefront into first and second portions, wherein the input side comprises a first reflector arranged to direct the first portion of the holographic wavefront away from the first plane in a first direction, a second reflector arranged to direct a second portion of the holographic wavefront away from the first plane in a second direction substantially opposite to the first direction, and a discontinuity between the first reflector and second reflector, wherein said discontinuity is arranged to receive and to nullify a third portion of the holographic wavefront, wherein said third portion is located between the first portion and the second portion. The first and second reflectors are arranged to respectively direct the first and second portions of the holographic wavefront to an input side of a holographic wavefront recombiner, wherein the holographic wavefront recombiner is arranged such that the first portion and the second portion of the holographic wavefront are recombined at an output side of the holographic wavefront recombiner.

    A HOLOGRAPHIC PROJECTOR AND METHOD
    2.
    发明公开
    A HOLOGRAPHIC PROJECTOR AND METHOD 审中-实审

    公开(公告)号：EP4400915A1

    公开(公告)日：2024-07-17

    申请号：EP23204585.6

    申请日：2023-10-19

    申请人： Envisics Ltd.

    发明人： BOARDMAN, Edward ,  SMEETON, Timothy ,  MALIN-CLEGG, Hugo ,  BURNHAM, Daniel ,  COLE, Alexander

    IPC分类号： G03H1/22 ,  G03H1/32

    CPC分类号： G03H1/2294 ,  G03H1/2205 ,  G03H1/32 ,  G03H2223/1320130101 ,  G03H2223/1420130101 ,  G03H2223/2320130101 ,  G03H2223/2620130101 ,  G03H2223/5520130101 ,  G03H2227/0320130101 ,  G03H2223/1820130101 ,  G03H2223/1620130101

    摘要： There is provided holographic projector comprising a display device arranged to form a holographic wavefront by spatially modulating light in accordance with a hologram of a picture displayed thereon. The holographic projector further comprises a magnification system comprising a first lens and a second lens. The first lens is arranged form a holographic reconstruction of the picture by focusing the holographic wavefront towards / substantially at a front focal plane of the first lens. The holographic reconstruction of the picture comprises a plurality of pixels. The holographic projector further comprises a kinoform being disposed between the first lens and the second lens and being arranged to apply a phase-delay to each pixel of the holographic reconstruction such that the phase-delay applied to each pixel is different to the phase-delay of the adjacent pixels. The holographic projector further comprises a movement assembly arranged to move the kinoform such that a plurality of different phase-delays are applied to each pixel of the holographic reconstruction within the integration time of the human eye. The kinoform comprises an array of zones and is arranged such that the width and / or the height of each zone is substantially equal to the distance between adjacent pixels of the holographic reconstruction.